213511004 has 12 divisors (see below), whose sum is σ = 427022064. Its totient is φ = 91504704.

The previous prime is 213510971. The next prime is 213511031. The reversal of 213511004 is 400115312.

213511004 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3812669 + ... + 3812724.

It is an arithmetic number, because the mean of its divisors is an integer number (35585172).

Almost surely, 2^213511004 is an apocalyptic number.

It is an amenable number.

213511004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213511004 is a wasteful number, since it uses less digits than its factorization.

213511004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625404 (or 7625402 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 213511004 is about 14612.0157404788. The cubic root of 213511004 is about 597.6864647980.

Adding to 213511004 its reverse (400115312), we get a palindrome (613626316).

The spelling of 213511004 in words is "two hundred thirteen million, five hundred eleven thousand, four".